<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/pig.jpg" alt="" />
        <span>后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 主题区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="iscollapse? '64px':'200px'">
        <div class="open" @click="openbutton" background-color="blue">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu :default-active="activePath" class="el-menu-vertical-demo" background-color="#545c64" text-color="#fff" active-text-color="#409EFF" unique-opened
        :collapse="iscollapse" :collapse-transition="false" router>
          <!-- 一级菜单 -->
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id" >
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconobj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
           
              <el-menu-item :index="'/'+subitem.path" v-for="subitem in item.children" :key="subitem.id" @click="saveNavState('/'+subitem.path)">
                <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subitem.authName}}</span>
              </template>
              </el-menu-item>
           
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主题 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data(){
    return{
      // 左侧菜单栏数据
      menulist:[],
      iconobj:{
       '125':'iconfont icon-huaping',
       '103':'iconfont icon-zhu',
       '101':'iconfont icon-mao',
       '102':'iconfont icon-xuehua1',
       '145':'iconfont icon-shuangyuzuo'
      },
       // 是否折叠
      iscollapse:false,
        // 被激活的链接地址
      activePath: ''
    }
  },
  created(){
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
      // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      console.log(res)
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      console.log(res)
    },
     // 点击按钮，切换菜单的折叠与展开
    openbutton(){
this.iscollapse=!this.iscollapse
    },
        // 保存链接的激活状态
   saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  },
}
</script>
<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: cadetblue;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: black;
  font-family: 黑体;
  font-weight: 800;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 20px;
    }
    img {
      width: 30px;
      height: 30px;
    }
  }
}
.el-aside{
    background-color:rgb(84, 92,100) ;
     .el-menu {
    border-right: none;
  }
}
.iconfont{
  margin-right: 10px;
}
.open{
  text-align: center;
  letter-spacing: 5PX;
  color: white;
}
</style>
